EP 0766193 A3 19971029 - Optical character reader with skew correction
Title (en)
Optical character reader with skew correction
Title (de)
Optische Zeichenleser mit Schiefekorrektur
Title (fr)
Lecteur optique de caractères avec correction d'inclination
Publication
Application
Priority
JP 25154995 A 19950928
Abstract (en)
[origin: EP0766193A2] A character reader comprises an input unit (10) for reading characters by a scanner-typed photoelectric transfer unit as an image, creating the image data formed by binary pixel of white and black lying on the plain surface and entering the same, a tangent detecting unit (30) for detecting tangent information on tangents contacting with black pixels forming a character string within the image data, a tilt deciding unit (40) for deciding a representative tangent which is representative for the direction of a row of character string, from the above-mentioned tangents, on the basis of the tangent information detected by the tangent detecting unit. <IMAGE>
IPC 1-7
IPC 8 full level
G06K 9/32 (2006.01); G06V 30/10 (2022.01)
CPC (source: EP US)
G06V 30/1478 (2022.01 - EP US); G06V 30/10 (2022.01 - EP US)
Citation (search report)
- [A] EP 0287027 A2 19881019 - IBM [US]
- [A] EP 0308673 A2 19890329 - TOSHIBA KK [JP]
- [A] EP 0434415 A2 19910626 - XEROX CORP [US]
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0766193 A2 19970402; EP 0766193 A3 19971029; EP 0766193 B1 20020227; DE 69619451 D1 20020404; DE 69619451 T2 20021121; JP 3006466 B2 20000207; JP H0997310 A 19970408; US 5982952 A 19991109; US 6175664 B1 20010116
DOCDB simple family (application)
EP 96115564 A 19960927; DE 69619451 T 19960927; JP 25154995 A 19950928; US 21027898 A 19981211; US 72032496 A 19960927